Improved machine for boarding and graining leather



tin-uitrit rmer Louis A. cio'NAc, or jrnoY, vNew YORK.

Letters Patent No. 94,1%, dated Augustv 3l, 1869.

,IMPRovED MACHINE F'oRBoARDING AND GRAINING LEATHER.

The Schedule referred to in ldhese Letters Patent and makngepaxf of the same.

To all whma it'may concern Be it known that I, LOUIS A. (.urIGNAC, of Troy, in the county of Rensselaer, and State of New York, have invented a certain useful Improved' Machine for Boarding and Graining Leather; land I do hereby declare that the following is a full and exact description of the construction and operation thereof, referencebeing had to the accompanying drawings, and letters of reference marked thereon, making part of this specication, in which- Figure 1 is aperspective view of said machine;

Figure 2 is a longitudinal lvertical section 5 and Figure 3 is a vertical transverse section, taken at the dotted line X .X of iig. 2.

The same letters refer to like partsin each of said figures.

The said invention consists in the construction, combination, andgarrangement of certain mechanical devices, in the manner substantially'as hereinafter fully described and shown, thereby constituting an improved machine, whereof the principal distinguishing features consist in the peculiar manner of controlling the operative action of th'e rubber-board, by means of its combined suspension-links or arms; and also in giving a reciprocating endwise movement to the rubbertable, in combination with the alternating opposite movement'of the rubber-board; and also inthe coin-z bination and inter-arrangement of the endwise-reeiprocating moving rubber-table with the rubber-board vand the bolster-table or frame, so as to operate with bed-pieces H H, andstandard O, with arm C', and

provided with a fixed table, D, innianner substantially as shown in the accompanying drawings.

To the bolster bed-pieces H' H there are arranged, transversely thereto, the cross-bolster pieces I I, which are secured to and supported from the bolster-pieces H H by means of the adjusting-screws g y, which are attached to and pass through the ends of said pieces I I, and then through, and are secured to said pieces H H by the nuts u n, which rest on the top sides thereof.

Arranged at -each end of said cross-pieces I I, and rest-ing thereupon, arc the springs 7e. h, around the guide-rods j', which are attached at their upper ends tothe bolster frames d d, while their lower ends pass freely into guide-holes through the bolster-pieces I l,

'as shown. l

Aiiixed to the bolster-frames d l is the bolster-tableV or frame F, which has its top side arched or curved, so as to conform to the arc described by the rubberboard G, in itsoperative stroke. Y

Arranged on and affixed to the .upper sideof said bolster-frame or table,.are the wheels' or friction-rollers c, iu manuel' substantially as shown.

E is the rubber-table, having its top and bottom sides arched or curved, to conform tothe are of motion of the rubber-board G.

To the nn'd'r side of said table E there are afxed rails l.: 7.', which are arranged thereon soas to ride on placed thereon in its proper adjusted position for operation, in manner as shown'. Y The operating-face of said table is covered or lined with cork or India rubber, 41 or with any other suitable material, which will prevent the leather from slipping thereon, while it is under tbe operation of the machine. l

rIhe rubber-board G is lmade in the form substantially as shown, and has its operating-face also lined with cork, i, or India rubber, or with any other suita= ble substance, that will prevent slipping of the leather thereunder. rEhis rubber-board issuspended in its proper operative position by means of the arm M, which has its lower end attached to the heel or rea-r part of the said r board, by meansof the pivot and jaws b, while its upper end is supported bya pivot affixed in the standard-arm C.

controlled and governed in rits action .on theleather by means of the arm 1),'its lower end being attached to the front, 'or toe p art of said board, by therpivot and jaws c, and the adjustable connecting-piece Q, which is secured to said arm P, after being adjusted be desired, bythe clamps and tightening-screws Z Z. The upperend of the saidarm l) is piVoted-to the rocking connecting-arm R, which is arranged on the top side of the standard-arm G.

' S is a slotted or framed'connecting-arm, pivoted tov the end part of said standard-arm C', and, has its lower links T, `while its upper end, U, which is slotted or framed, to. thereby receive-a friction-rollcr or wheel, a, connected to. the end of the rocking arm 1t, which is slotted or forked so as torcceive said wheel, which rolls within the frame U aforesaid, substantially as shown, and lthereby in connection with the oscillating vices, controls and prevents thc toe or -frontpart of the rubber-board G from rising'upward ott its` work.

devices, by means of the connecting-arm N, which 'the'wheels or friction-rollers e e, when. said table isy The front, or toe part of said rubber-board'G, is

so as to either shorten or lengthen said arm, asmay cnd att-ached to the arm llI aforesaid, by means of the arm M, vand the aforesaid intermediate conn'eci'fing-de-v (')perativc motion is given to these beibre-described.

operates the rubber-board G, by being attached to a crank or wrist-pin of the fly-wheel O, on thedrivingshaft L, and operative motion is given to the rubbertable E by means of the connecting-rod J, and its ec'- centric or crank K affixed on said shaft L.

Power is applied to the driving-shaft L through the pulley V.

All otthe aforesaid respective parts are combined and arranged in the manner substantially as shown in theV accompanying drawings, and thus constitute an improved machine for graining and boarding leather. rlhis improved machine is operated to board and grain leather, in manner substantially as follows The hide or piece of leather to be operated on is folded with the grain-side together, at the end or place iirst fed under the rubber-board, at the beginning of its forward stroke; then, by the combined movements of the rubber-board and the rubber-table, in alternating and reciprocating directions in succession, the grainside of the hide or skin is successively rubbed together,

the operatorpsbifting and moving the hide laterally between the rubbing-surfaces, until the grain of the leather is raised, and the hide made pliable.

The rubbing-devices, G and E, are adjnstedor setv for different thicknesses of leather, by moving up or down the nuts u of the adjusting-screws g, as aforesaid, which raises or lowers the rubber-,table E, and the toe, or front part of the rubberboardG may be adjusted to be high or low, by meansof the connecting-piece Q, in manner as before described;

Having thus described my invention,

That I claim, and desire to secure by Letters Patent, is-

l. rlhe combination of the snspensionarm M, controlling-arm P, rocking arm R, slotted arm S, links T, and rubber-board G, with each other, and the actuating-rod N, or its equivalent, substantially as described, and for. the purpose set forth.

2. The combination of the `rubber-board G, the reciprocating moving rubber-table E, and the bolstertable F, substantially as described, and for the purpose set forth. ,Y Y

.3. The arrangement of `the reciprocating` moving rubber-table E between the rubber-board G and the bolsterftable ll, substantially as shown and set forth.

A4C. The combination of the rails k l; and wheels c,

'-Vitnesses:

J. J. SAVAGE, RICHARD Pnnsoo'rr.

with thc movable rubber-table E, the bolsterftable 11,

, substantially as shown and for thepnr- 

